Penguins spend almost 75% of their lives in the sea. an emperor penguin in the wild has a life span of about 18 years. about how many years does this penguin spend in the sea?

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

This is so hard and it’s for a test

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.